User Guide

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3-1
3. SCH-A212 Block Diagram
CH A N N E L
COD EC
CP U
A RM 7
V OCO DE R
V it er bi
DE COD ER
M O DU L A T OR
& De mo d.
U A RT
2 56 K EE PROM
L CD
M OD U L E
K E Y
FP C A SS’Y
CO D E C
3 2 M / 4M M EM O RY
V CO
1 /2
T X IF
P L L
V C O
1 /2
2 60 .76 M H z
T A N K
CI RCU IT
V CT CX O
1 9.6 8M Hz
1 70 .76 M H z
T A N K
CI RCU IT
P L L
V CO
AN T ENNA
DUPLEXER
BUFFER
B U F F E R
8 24 .64 ~ 8 4 8.37 M H z
869.64~893.37MHz
LNA
955.02~ 978.75MHz
9 55 .02 ~ 97 8.7 5M H z
Fc = 1 30 .38 MHMH Z
IF AMP
M Hz
Fc=85.38
3.6 V
B A T T ER Y
3 .0 M C
RECE IV ER
U ni t
M IC
M S M
.
3 .0 M A
DRIV ER
3 .0 M P
3 .0 IF
3 .0 SY N
COUPLER
RF T 3100
I F R 3 0 0 0
LOCK
SENSING
4M SRAM
3. 0TC XO
3. 0TX
3. 0RX
P.A
PM1000
PA M
VCCVCC